writing assignment#3

There are  some reasons why people can live longer than they used to.First, medical technology have developed recently.For example medicine and medical machine and knowledge.Now,we can cure many disease that we could not cure 50 years ago.Second reason is our knowledge about our health has also improved.Now we can get so many information about what food is good for our health?What kind of food we should avoid or What kind of lifestyle we should do.We can get these information from TV and internet,so development of  media help us to get information.Third reason is the number of the war is rapidly decreased in 20th century.Of course,there are still many war in the world,but especially in developed country,there are little wars.So number of people died from wars has decreased and during the world second war two,our lifespan was very shorter than now.For these three reason,now we can live longer than we used to.